Water-cooled skewback.



E. W. CLARKE. WATER COOLED SKEWBACK- APPLICATION FILED NOV. 1. 1916.

Patented May 21,1918.

ATTORNE cumin-or wan-mom nonunion, rmmsnvam warm-ocean!) sxnwnaex Toall whom it may am citizen of the Unite skilled in the art ,to'which it Erma W. Oman, it states and a resident of the boroighof Westmont, county of Gambria, and tate of Pennsylvania, (whose p0st-oflice address is Johnstown, Pennsylvania,) have invented certain new and useful Improvements in Water-Cooled Skewbacks; and I do hereby declare the following to be a full, clear, and exact descriptiono the invention, such as will enable others appertams to Be it known that g,

make and use the same.

My invention relates to the construction of heati ,melting or other furnaces, and particular y to those that are provided with arched roofs formed of fire bricks, or other refractory material, and my invention resides in the construction and arrangement of a water cooled skewback for supporting the ends of the arches in place of the customs; skewback brick. My water cooledskewbac may also be made adjustable in position to accommodate any outline or arrangement of arch desired and it may be supported by the furnace frame-work, the furnace walls or by the buckstays thereof. cooled "skewback is also preferabl *made sectional so that the portions thereo me be arranged in any ahnement desired an I may connect the coolingpi es of the different sections in such a way t at a certainainount of flexibility is provided to allow for con-.

traction and expansion without. breaking the skewback, waterv pipes'or connections.

In the specifications and drawings herein I have confined my description and drawings'to the use of my skewback in connection with an open-hearth meltin furnace for the sake of simplicity, but I wish it understood thatit is equally applicable to other furnaces and to those having arched roofs, lintels, or

.other portions requiring a supportof this character. a v a Having" thus given a general description of my invention, I will now, in order to make the matter more'clear, refer to the annexed sheet of drawi s which forms. art of this specification an in which like c aractors denote like parts .v Figure 1 is a front elevation of the an rstructure of one-half of aniopen-hearth nace with the upper portionsof the e'rators'shown in cross section, my' oooled i v don of Letters Patent.

Application fled Iovember 7, 1816. Serial-Ho. 189,079.

My water skewback being shown as applied thereto ;1

Fig. 2 is a cross sectional elevation of a fur- Patented May 21, 1918.

'nace-taken on the center line 11-11 of Fig. Z

1; F L3 is a detailed elevation on ancni water coo ed skewback and a ortio'n of'te adja' lar scale'of one section of m cent section showing e pipe. connections i. A

and hanging bolts Fig.4'1s endview of?! i the right-handen portion'of Fi 3; Fig, 5 1s a cross section on theline V-- of Fig. ,3; showmg a water pipewith theelhowfnippl and un on removed and a portion of. a hang-Q ing and adjusting bolt' F1g." 6 isa cross tional view of the skew ack showing another manner of supporting the, same a on the frame-work 'orbuck'staysof the mace Fig.7 ,is a cross sectional view of the'skew-v back showing another and slightly modified: form ofjsupportlng the same5 and. Fig. 8 i shows the skewback I with still' another sli htly.difierent method of support;

1 ferring now to the various characters of reference on the drawings: 1 represents an open-hearth furnaoe'lin general, 2 the arched roof thereof, 3 are In water cooled skewbacks which ma be made 'of cast iron,

cast steel or other metal with conduits formed therein to which the cooling pipes 4 are attached or in rojecting portions 5- which are connected ral therewith, :desired; these cooling pipes having upwardly.

jecting pipes,- the alinement' Ofthfl skewsired, and the fiexibi'lit j j character, on account 9 its-length; will albacks to each other In? bevaried, as de of a. 7. joint of-this,

low for any expansions or contractions'of' r the structure without breaking the i pe connections. As particularly illustrate mF' 2, 3, 4 and 5 of the drawings the'skewbac, are a'cl'ustably supportedby the bolts B Which if;

a trough an opening 9..provi.de d there:

for in the, skewback, a recess 10 provided to accommodate the lower end;ei the bolt and a nut thereon, leavingithe vel'f tical surface of theske'wba'ck free from "ob structions. The upper ends of these bolts aresupported bfy angles or projections 11, forming parts 0 or secured to the buckstays or frame-work of the furnace, and the nuts 12 on the. upper ends of the bolts serve to support the-skewback and also allow it to be adjusted up and down to the alinement being ials" I desired. The furnace buckstays are indirecess of the .skewback, as shown, and supsition, as may be ports it bycontact of the upper surface of saidlower flange with the upper boundary Y surface of the recess, as illustrated. Referring now to Fig. 7, my skewback is directly supported upon. the angle 16 which is secured to the frame-work or bucksta s of the furnace and which maybe place in any osition desired thereon and secured thereto by bolts or rivets. Another slightly different arrangement back is shown in Fig. 8, w ich consists of an angle 17 secured with one leg projecting ugwardly and the other'inwa'rdly, and on t e inwardly projecting leg the skewback rests and is supported, this angle 17 being secured to thebuckstays by bolts or rivets in any podesired. The side walls of the furnace are 18, while the door arch is 19. I

()n account of the approximately trianular. or trapezoidal formof my skewback, slope is provided on its inner surface so as to properly and directly receive the arch bricks of the roof construction, and these bricks, therefore, may be of the same size and conformation. The coolin feature of my skewback enables i to withstand the high heats to which it may be subjected in use. and in case the furnace wa ls, door arches or adjacent'portions of the brick or refractory structure below the skewbacks hould be burned awa or become weak in se, the skewback wou d still be maintained in position, as it is hung 1'1 on the bolts 8 or supported directly by the rame-work of the furnace. This is one of the main features of my construction and renders the roof arch 50' inde endent of the support of the side walls or other portions of the furnace, and it also prevents -settlement of the roof, or in case the sidewalls. should shrink or settle slightly owing to heat, the opening occasioned thereby between them and the skewback could be readily closed refractory material. By

b reasonof the. adjustable bolts 8 my skewof the support of my skewback can be located at any position desired on the furnace andthe position may be varied from time to time upon rebuilding if considered expedient or necessary.

Although I have described and illustrated m invention in considerable detail, I do not wish to be limited to the exact and specific details thereof as shown and described, but may use such modifications in, substitutions for, or equivalents thereof, as are embraced within the scope of my invention, or as pointed out in the claims.

Having thus described my invention, I claim and desire cut is what to secure by Letters Pat- 1. A furnace skewback comprising a plurality of sections, each provided with a-number of connected cooling conduits therein, flexible pipe connections extending from one section to the adjacent section and a flat horizontal bearing surface and a bolt hole connected therewithwithin the lines of said skewback, a bolt mounted in said hole with its head or nut contiguous to said bearing surface and its bod Y projecting outwardly through said hole, said bolt being adjustably mounted on the innerv side of the furnace frame-work.

2. A furnace skewback of approximately triangular or trapezoidal section provided with cooling conduits therein, a flat horizontal bearing surface and a bolt hole connected therewith within the lines of said skewback, a bolt mounted in said hole with its head or nut contiguous to said bearing surface and its body projecting outwardly through said 'hole, said bolt being ad'ustably mounted on the inner side of the urnace frame-work and flexible pipes connectin the conduits 0 one section with those of t e adjacent section.

3. A furnace skewback provided with a plurality of conduits therein, cooli fluid connections to said conduits, a flat'horizontal bearin surface and a bolt hole connected therewith within the lines of said skewback, a bolt mounted in said hole with its head or nut contiguous to said bearing surface and its body projecting outwardly through said hole, said bolt being adjustably mounted on the inner side of the furnace frame-work, the inner surface of said skewback being sloping and adapted to directly receive the furnace arch bricks.

In testimony whereof I hereunto aflix my signature.

EDGAR W. CLARKE. 

